<SEC-DOCUMENT>0001213900-21-060177.txt : 20211116
<SEC-HEADER>0001213900-21-060177.hdr.sgml : 20211116
<ACCEPTANCE-DATETIME>20211116213015
ACCESSION NUMBER:		0001213900-21-060177
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20211112
FILED AS OF DATE:		20211116
DATE AS OF CHANGE:		20211116

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			RILEY BRYANT R
		CENTRAL INDEX KEY:			0001207269

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39291
		FILM NUMBER:		211418216

	MAIL ADDRESS:	
		STREET 1:		C/O B. RILEY FINANCIAL, INC.
		STREET 2:		21255 BURBANK BLVD, SUITE 400
		CITY:			WOODLAND HILLS
		STATE:			CA
		ZIP:			91367

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BRF Investments, LLC
		CENTRAL INDEX KEY:			0001880803
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39291
		FILM NUMBER:		211418217

	BUSINESS ADDRESS:	
		STREET 1:		11100 SANTA MONICA BLVD.
		STREET 2:		SUITE 800
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90025
		BUSINESS PHONE:		818-884-3737

	MAIL ADDRESS:	
		STREET 1:		11100 SANTA MONICA BLVD.
		STREET 2:		SUITE 800
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90025

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			B. Riley Financial, Inc.
		CENTRAL INDEX KEY:			0001464790
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-BUSINESS SERVICES, NEC [7389]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39291
		FILM NUMBER:		211418218

	BUSINESS ADDRESS:	
		STREET 1:		11100 SANTA MONICA BLVD
		STREET 2:		SUITE 800
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90025
		BUSINESS PHONE:		818-884-3737

	MAIL ADDRESS:	
		STREET 1:		11100 SANTA MONICA BLVD
		STREET 2:		SUITE 800
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90025

	FORMER NAME:	
		FORMER CONFORMED NAME:	Great American Group, Inc.
		DATE OF NAME CHANGE:	20090522

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Eos Energy Enterprises, Inc.
		CENTRAL INDEX KEY:			0001805077
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		3920 PARK AVENUE
		CITY:			EDISON
		STATE:			NJ
		ZIP:			08820
		BUSINESS PHONE:		(732) 225-8400

	MAIL ADDRESS:	
		STREET 1:		3920 PARK AVENUE
		CITY:			EDISON
		STATE:			NJ
		ZIP:			08820

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	B. Riley Principal Merger Corp. II
		DATE OF NAME CHANGE:	20200227
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>ownership.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-11-12</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001805077</issuerCik>
        <issuerName>Eos Energy Enterprises, Inc.</issuerName>
        <issuerTradingSymbol>EOSE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001464790</rptOwnerCik>
            <rptOwnerName>B. Riley Financial, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11100 SANTA MONICA BLVD SUITE 800</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001880803</rptOwnerCik>
            <rptOwnerName>BRF Investments, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11100 SANTA MONICA BLVD SUITE 800</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001207269</rptOwnerCik>
            <rptOwnerName>RILEY BRYANT R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11100 SANTA MONICA BLVD., SUITE 800</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-11-12</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>23377</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>11.0114</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5631013</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By BRF Investments, LLC</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-11-15</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>145055</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>10.9903</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5485958</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By BRF Investments, LLC</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-11-16</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>113228</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>11.0022</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5372730</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By BRF Investments, LLC</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1769</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Warrants (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>11.5</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2021-05-22</value>
            </exerciseDate>
            <expirationDate>
                <value>2025-11-16</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>325000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>325000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By BRF Investments, LLC</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">This Form 4 is being filed jointly by B. Riley Financial, Inc. (&quot;BRF&quot;), BRF Investments, LLC (&quot;BRFI&quot;), and Bryant R. Riley. BRF is the parent company of BRFI. As a result, BRF may be deemed to indirectly beneficially own the shares held by BRFI.</footnote>
        <footnote id="F2">Bryant R. Riley is the Co-Chief Executive Officer and Chairman of the Board of Directors of BRF. As a result, Bryant R. Riley may be deemed to indirectly beneficially own the shares of Common Stock directly held by BRFI. Each of BRF, BRFI, and Bryant R. Riley disclaims beneficial ownership of the outstanding shares of Common Stock reported herein, except to the extent of its/his respective pecuniary interest therein.</footnote>
        <footnote id="F3">Represents shares held directly by Bryant R. Riley.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>B. Riley Financial, Inc., by: /s/ Bryant R. Riley, Co-Chief Executive Officer</signatureName>
        <signatureDate>2021-11-16</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>BRF Investments, LLC., by: /s/ Phillip Ahn, Authorized Signatory</signatureName>
        <signatureDate>2021-11-16</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Bryant R. Riley</signatureName>
        <signatureDate>2021-11-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
